Electric valve actuator



Dec. 8, 1,942. o.l E. ROSEN 2,304,477

ELECTRIC VALVE ACTUATOR menen. s, 1940 lo Flaz.

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@i 2 `l W INVENTOR. OSCAR E RosEN lob . A TToRNEYs Patented Dec. 8, 1942U NIT ED STAT E S PAT F F lL CE1 ELECTRIC vALvE ACTUATOR Oscar E. Rosen,Detroit, Mich.

Application February 5, 1940, SerialNol 317,367 6 Claims. (VCI. F75-337)The' present invention relates to electric means:` designed specificallyfor two-way valve actuationythough ,not limited. to such use as it maybeused for.` the` actuationqof any device required tobe moved ineither oftwo directions i alternately or in any other order.

Among the objects of the invention is a device of theV kind indicatedywhich will be positively andg instantaneously returned to neutralposition upon cessation of theA actuating impulse.

Another object isy a device of theA kind indicated in which the amountof movement of the moving partsmaybe accurately adjusted.

Stilll another. object is a device of the kind indicated in which thereturn from actuated posii' tion to the neutralposition isthrough theaction ci; a leaf `spring adjustably tensioned.

Other objectswill readily occury to those skilled in the art upon.reference to the following de- .scription`r and the accompanying drawingin which: y n Figure 1 is a frontelevation oivthehdevice.

Figure 2 is a central verticalsectional View as online 2 2 of Figure 1.

Figures 3, 4 and 5 are sectional views of details "iw of construction. f

In the drawing an Lshaped frame member I0 is shown as mounted upon asuitablesupport II andxed to its upright portion Illa are a pair ofsolenoids I2, these being mounted in suitable frames I3 iixed to squarenon-magnetic bases I4 as by screws I5. The bases are set in grooves I6in the face of frame portion Illa and held in position by means ofscrews I1 passing through the slots I8. Accurate vertical adjustment ofthe solenoids may be accomplished by the screws threaded into the baseportion Ib, the heads of the screws acting against the bases I4 andbeing fixed in adjusted position by lock nuts 2 I.

As shown best in Figure 1, each solenoid is provided with a T-shapedcore and each core 25 carries at its lower end a non-magnetic block 26xed thereto as by pins 2l, which block is slotted in its lower face toreceive the hooked end 28 of a rod 29, this hook extending over a pin 30passing through the slotted block 2G.

The lower ends of the rods will be connected to the device to beactuated and in Figure 1 is shown a portion of a two-way valve designedto be moved up or down from a neutral position in its casing 36. Inorder to accomplish such movement the lower ends of the rods 29 arehinged to the two ends of a lever 3'I pivoted in its center, as at 38,while the valve is pivoted upon the lever at a point half Way betweenkthrough. the leverinto the lug, being shouldered to prevent binding ofthe* lever. This lever 48 has'at each end a screw 43 by means of whichvthe movement of the lever may, be, accurately limited.

Also carried upon the lever 49 and resting upon spaced lugs 45, is alaminated spring r46, the endsoifwhich extendr to beneath the blocks 26and are tensioned` tol exert strongspring pres,- sure against ytheblocks, tendingy to thrust them upwardly.

These springs` 48 are heldin place and their` tension adjusted bymeans-foi the screw 41 and nuts 48, which screw is xed to or forms apart ofv a cylindricalr plug 49 iittedi into a; suitable opening inlever 40 at the center thereof and itself provided with a passage forthe pivot screw 42;.

The plug 49, therefore, serves as an anchor for the spring adjustingscrew. 41 and also as a brake upon thelever 40r in its oscillations.

Suitable electric connections may be made to the solenoids I2 throughthe binding posts 55 and a suitable cover 56 may be placed over themoving parts.

What I claim is:

1. A device of the character described consisting of a frame and a pairof spaced solenoids with their axes parallel, means for supplyingelectric current thereto, a support for each solenoid attached to theframe, a movable core member for each solenoid projecting beyond thesaid support, adjustable means for controlling the movements of saidcore members, said adjustable means consisting of an elongated centrallypivoted arm extending beneath said core members and in spacedrelationship thereto, means for adjusting said arm about its pivot, aspring surmounting and attached intermediate its ends to the' saidpivoted arm with the ends of said spring free and respectively inengagement with the core members extending beyond the said supports, alever to cause actuation of a two-way device, and parallel spaced rodseach connected at one end to a core member and extending beyond the saidspring and pivoted arm and connected at their other ends to the ends ofthe said lever.

2. A device of the character described consisting of a frame and a pairof spaced solenoids with their axes parallel, means for supplyingelectric current thereto, an adjustable support for each solenoidattached to the frame, means for adjusting said supports, a movable coremember for each solenoid projecting downwardly beyond the said support,adjustable means for controlling the movements of said core members,said adjustable means consisting of an elongated centrally pivoted armextending beneath said core members and in spaced relationship thereto,means for adjusting said arm about its pivot,

an elongated leaf spring surmounting and attached intermediate its endsto the said pivoted arm with the ends of said spring free andrespectively in engagement with the core members extending beyond thesaid supports, a lever to cause actuation of a two-way device, andparallel spaced rods each connected at one end to a core member andextending beyond the said spring and pivoted arm and connected at theirother ends to the ends of the said lever.

3. A device of the character described consisting of a, frame and a pairof spaced solenoids with their axes parallel, means for supplyingelectric current thereto, a vertically adjustable support for eachsolenoid attached to the frame, spaced vertically adjustable screwsmounted in said frame and in engagement with said supports to effectadjustment of the supports and solenoids when desired, a movable coremember for each solenoid projecting downwardly beyond the said support,adjustable means for controlling the movements of said core members,said adjustable means consisting of an elongated centrally pivoted armextending beneath said core members and in spaced relationship thereto,means for adjusting said arm about its pivot, a leaf spring surmountingand attached by suitable means intermediate its ends to the said pivotedarm with the ends of said spring free and respectively in engagementwith the core members extending beyond the said supports, the saidattaching means for said leaf spring also constituting means to variablyadjust the tension of the said spring, a lever to cause actuation of atwo-way device, and parallel spaced rods each connected at one end to acore member and extending beyond the said spring and pivoted arm andconnected at their other ends to the ends of the said lever.

4. The device as claimed in claim 3, wherein the said arm is providedwith spaced upstanding projections intermediate its ends, the saidprojections being on opposite sides of and adjacent the pivotalconnection of the arm, and with the said spring supported on andengaging each of the projections.

5. A device of the character described consisting of a frame ofsubstantially L-shape provided with side portions and a pair of spacedsolenoids with their axes parallel, means for supplying electric currentthereto, a vertically adjustable support for each of the solenoidsrespectively attached to opposite sides of the frame, verticallyadjustable screw means mounted in the frame under and engaging each ofthe said supports, a movable core member for each solenoid projectingbeyond the said support, adjustable means for controlling the movementsof said core members, said adjustable means consisting of an elongatedcentrally pivoted arm extending beneath said core members and in spacedrelationship thereto, means for adjusting said arm about its pivot, anelongated spring surmounting and attached by screw means intermediateits ends to the said pivoted arm with the ends of said spring free andrespectively in engagement with the core members extending beyond thesaid supports, the said screw means also constituting means to variablyadjust the tension of said spring, a lever to cause actuation of atwo-way device, and parallel spaced rods each connected at one end to acore member and extending beyond the said spring and pivoted arm andconnected at their other ends to the ends of the said lever.

6. The device as claimed in claim 5, wherein the said arm is providedwith upstanding spaced projections intermediate its ends, the saidprojections being on opposite sides of and adjacent the screw means andpivotal connection o f, the arm, and with the said spring supported onand engaging each of the projections.

OSCAR E. ROSEN.

